Download Compression Testing Machines MEH LC MD2 W Series

Materials Testing Engineering
Compression Testing Machines
MEH LC MD2 W Series
S.A.E. IBERTEST
c/ Ramón y Cajal, 18-20. - 28814 DAGANZO (Madrid) - Spain
Tel. +34 918 845 385 - Fax. +34 918 845 002
[email protected] - www.ibertest.com
MEH LC SERIES
COMPRESSION TESTING MACHINES MEH LC MD2W SERIES
Features
The testing machines MEH LC series have been designed and manufactured to meet all the requirements of
standards UNE-EN 12390-4 and EN 722-1, paying special attention to the following characteristics:
›› Rigidity and stability of the test.
›› Load axiality.
›› Self-aligning and upper plate locking.
›› Hardness, flatness and parallelism of the compression
plates.
MEH LC 2000 MD2 W - with WinTest32 software and desktop PC computer
CONCRETE
›› Ball-socket joint with autoblock system
IBERTEST guarantees in writing, strict compliance with
requirements of EN 12390-4 standard.
Each machine comes with a certificate issued by our
Department of Metrology, conducted with calibrated
equipment traceable to international standards.
IBERTEST guarantees class 0,5 or 1, as per ISO 7500-1
and EN 12390, in all MEH LC machines.
Aaplications
Using the suitable device (see optional accessories),
and according to the maximum load capacity, the MEH
LC machines allow to perform, among others, the following testings:
›› Compression strength of concrete, on cylindrical and
Compression elasticity of concrete.
Young Modulus and Poisson Coeficient determination
cubic specimens, as per EN 12390-4, ISO 4012, ASTM C39,
ASTM C683, etc.
›› Compression strength of bricks, precast concrete blocks
and structural building materials, as per EN 772-1
Flexural strength of concrete as per UNE-EN
12390-5
›› Compression strength of stones and rocks (natural or
artificial)
›› Compression elasticity of concrete: YOUNG MODULUS
and/or POISSON COEFFICIENT determination (using aditional optional software and devices)
›› Flexural strength, with one or two loading points, of concrete prismatic specimens, according to EN 12390-5, ISO
4013, ASTM C78, ASTM C293, ASTM C683, etc.
›› Indirect tensile of paving blocks, as per EN 1338.
›› Indirect tensile strength (Brazilian test) of concrete cylindrical specimens, as per EN 12390-6, ISO 4108, ASTM C496,
etc.
Indirect tensile of paver-bricks, as EN 1338
Indirect tensile (Brazilian test) as per EN 12390-6
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MEH LC SERIES
Testing frame description
1 - Upper frame-plate made in solid steel.
2 - Upper compression plate. Made in ground hardened steel. Hardness of contact surfaces is more than
550 HV30. This plate has a specially designed ball-socket joint, with lubicating oil and autolocking system.
CONCRETE
3 - Preloaded steel columns
4 - Test zone with safety screen. Made of impactproof polycarbonate. The front door comprises a magnetic safety-switch.
5 - Shelf for collection and spill of debris: To properly
evacuate tested specimen remains.
6 - Lower compression plate. The lower plate has
centering marks for specimens correct placemen. The
distance between compression plates is 340 mm, adjustable by inserting optional spacer blocks (see accessories).
7 - Piston-sleeve assembly. With mobile flanges system, which allows to accurate centring of piston on the
axis of the machine. The piston is solid steel, conveniently rectified. The perfect alignment of the piston is
checked on each machine by means of a multi-component force transducer based in 4 strain-gauges, as
specified in EN 12390-4
8 - Lower frame-plate. In thick solid steel, which houses the piston-sleeve assembly.
9 - Levelling feet.
10 - “All in One” computer, with touch-screen and
WinTest32 software for test management.
11 - Command desktop. With main switch and pushbutton for emergency stop. The hydraulic unit is located inside the desktop and includes.
›› High performance servo-valve with close-loop control,
allows excellent control of the load rate, even when unloading. This accurate control allows the user for making
elasticity test with precision and confidance.
›› Watertight oil tank with filter cover , drain valve, filling
tap and oil level indicator.
›› Fast-unload electro-valve, non-return suction filter, safety relief valve, hoses and high pressure racords.
12 - Electric board. The electric board is located on
the side of the desktop frame, the box comprises the
ELECTRONIC MODULE MD2 and the motherboard for
maniouvres control
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MEH LC SERIES
Optional equipment:
RECTANGULAR COMPRESSION PLATES 450 X 300 MM
SPACER BLOCKS
NOTE: This option must be specified in the purchase
order, to be mounted in our factory.
Spacer blocks are placed over the loading piston of the
machine, under the lower compression plate, and are
necessary in case of testing specimens under 300 mm
height (see configuration table ).
The rectangular plates can enhance test surface available to test other elements such as concrete blocks,
bricks, vaults, etc).
CONCRETE
They are made of steel, 50 mm thick (100 mm also
available), and feature self-centering system to the piston and to the lower compression plate.
These plates fulfill all the requirements of the standards
EN 12390-4 and EN 772-1. They have trim marks in diagonal and circular, to locate any type of test specimen
perfectly. The upper plate has ball and socket joint.
LIFTING DEVICE FOR LOWER COMPRESSION PLATE
A cranck-handle system, located in the rear of the
frame, allows to lift the heavy lower compression-plate
for introduce or withdraw the spacer blocks under the
plate.
Assembly scheme for blocks spacers
SPECIMEN HEIGHT
REQUIRED SPACERS
200 mm
2
150 mm
3
100 mm
4
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MEH LC SERIES
Models and specifications
MODEL
Maximum capacity
MEH-3000 LC
2000 kN
3000 kN
High rigidity: Maximum frame deformation < 1 mm at full load.
Testing frame
CONCRETE
MEH-2000 LC
4 crhome-plated preloaded columns
Columns
Free distance
420 x 200 mm
between columns
Included in standard supply
Electrical end of stroke
Cylindrical plates
Tempered, grounded steel. Hardeness upper than 550 HV30 as per UNE-EN 12390-4
Standard supplied
Cylindrical
sions
plates
475 x 250 mm
dimen-
Rectangular plates *
(Optional)
Rectangulars plates
dimensions *
Distance between plates
Flatness tolerance
Roughness
Piston stroke
Ball and socket joint
Testing frame dimensions
(mm)
Testing frame weight
Control desktop dimensions
Control desktop weight
Ø 290 x 50 mm thickness
Ø 320 x 70 mm thickness
Tempered,ground and hardeness upper than 550 HV30 as per UNE-EN 12390-4
450 x 300 x 50 mm thickness
450 x 300 x 70 mm thickness
340 mm. Adjustable by inserting spacer blocks (optional)
Less or equal 0.03 mm, as per EN 12390-4
Between 0.4 and 3.2 µm as per standards ISO/R 468 and UNE-EN 12390-4
60 mm
60 mm
Autolock type,oil lubricated, as per EN-12390-4
550 x 550 x 1400 (h) mm
590 x 590 x 1425 (h) mm
1400 kg
1500 kg
500 x 500 x 1200 (h) mm
760 x 650 x 1650 (h) mm
170 kg
200 kg
(*): The optional rectangular plates are mounted instead of the cylindrical plates supplied as standard
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Control electronics - MD series
MD CONTROL ELECTRONIC
Modular and computer independent electronic system. Based on last generation microprocessors and
designed specifically for closed loop control and data
reading on high performance testing solutions.
CONTROL ELECTRONICS
Maximum performance in accurate and real time variables reading, close loop control and data sending to
external processing on WINTEST software.
The MD system replaces the conventional PC-internal
control boards. It widely improves control performance, reliability (not subject to PC failures) and data
acquisition speed.
Data received from transducers is sent via full speed
USB (or Ethernet) connection to a computer to be processed by the WINTEST 32. The information received by
WINTEST software is managed in real time to perform
graphics, calculate formulas and show test results.
Due to PC independent and external configuration,
the computer provided with the machine can be easily
replaced.
External table top configuration with front pannel. Models MD22 y MD58
Highly useful when computer fails due to hardware
(component) or software (virus) problems.
Machine configuration, calibration, transducers information, etc won’t be afected as all the information is
stored in the MD module.
External table top configuration,
without front pannel. Optional for
MD2 amd MD5
MD2 modulue, bulk-in configuration. With protective case to be placed in machines’ electric area.
o en el cuadro eléctrico de la máquina de ensayos
MD2 module , placed in the base housing of a TESTCOM machine
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Control electronics - MD series
CONTROL OPTIONS
MD electronics allows to close the control loop with
the applied load (control in kN/s) or with the position
(control in mm/s) or with the material deformation
(control in mm/s):
The MD module receives the signal from machine’s
load transducer (load cell or pressure transducer) and
compares this feedback value with the command
value(N/s ó kN/s).
Position control
The MD module receives the signal from machine’s
position transducer (encoder, resolver, LVDT, etc.) and
compares this feedback value with the command value (mm/min).
Deformation control
Scheme of load control for servo-hydraulic testing machines
The MD module receives the signal from machine’s
deformation transducer (extensometer) and compares
this feedback value with the command value (mm/s or
mm/min)
Deviation correction
CONTROL ELECTRONICS
Load control
Upper end of
Stroke
The error (deviation between command and feedback)
is processed with a PID
The three signals comming from the PID are combined
to generate a new command signal, sent to the servovalve or servomotor to eliminate, in the minimum possible time and with estability, the deviation.
The time used in this process (detection, evaluation
and new signal generation is called, closed loop control time.
Motor
Applications of each type of control
Load control is normally used on low load resistance
tests materials which undergo deformation just before
fracture, such as concrete, cement, ceramics, rocks, adhesives, etc. as well as in metals test on material elastic
zone.
Position control is used in materials with high deformation, as rubers, elastomers, etc as well as on metals
after elastic range.
Deformation control is used in fracture tests and for
research applications.
Load cell
Extensometer
Lower end of stroke
Ethernet / USB
Encoder
Automatic control change
WINTEST 32 software allows to define several criteria
for changing control automatically (defined variation
in the slope of the graphic, certain value of strength,
load, position or deformation). Widely used in several
applications as in metals testing to allow the control
change among materials regions (elastic to plastic)
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Control electronics - MD series
MD VERSIONs and Specifications
MD2
MODULE
MD22
MD5
MD58
CONTROL ELECTRONICS
Front View
Rear View
Aplication
Microprocessor
Channels
Static tests
Static and Dynamic Tests
CPU 133 MHz
CPU 800 MHz
Control: DSP 32 bit
Up to 4
Up to 8
Resolution
Max sampling
quency
± 180.000 steps per channel
fere-
1 kHz
1000 reading per sec per channel
Sincronization
Closing loop time
All channels fully synchronous and simultaneous
1 milisecond
(1000 times per second)
Up to 8 modules can be connected.
32 total synchronous channels
Up to 32 modules can be connected.
256 total synchronous channels
PC communication
USB 2.0 full speed and/or Ethernet 10 / 100 Mbit
Digital Inputs (24 V)
8
Digital outputs
8
(24 V)
Serial sensor interface
COM1 (internal)
Debug interface
COM2: 115 kB
Slot for safety shield
YES
Power supply
Remote control UCRD-7
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0,2 milisecond
(5000 times per second)
±10V-Command-Output (generated with ±15 Bit resolution)
I/O‘s and relays for safety functions
Drive interface
Expansion possibilities
5 kHz
5000 reading per sec per channel
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DC. 24 V
YES
AC.100 – 250 V
NO
YES
NO
Control electronics - MD series
UCRD-7 ADVANCED REMOTE CONTROL UNIT
Advanced features
The UCRD-7 is not only a remote controller, aside its
benefits related with ergonomic test preparation, grips
operation and accurate movement, it has the capability of carrying out test independently.
›› General Tension/Compression
››Tear
››Tensile test over metals
››Brazilian
››Bending
››Cycles
››Shear
CONTROL ELECTRONICS
Without the need of a computer and software, several
test can be configured and executed directly on the
UCRD-7
Example: Tensile test over metals
Results showed/calculated by UCRD-7 :
›› Original cross-sectional area of the gauge length
›› Tensile strength
›› Percentage elongation at maximum load (Fm)
›› Load at fracture
›› Percentage elongation at fracture load (Fb)
›› Young’s modulus (only with extensometer)
›› Proof stress points: 3 points (only with extensometer)
›› Proof stress point at total elong(only with
Basic features
1. Actuator movement: Piston or crosshead
Via Up /Down keys or with the Digi-Poti for accurate positioning
2. Intermediate crosshead movement:
For electro-hydraulic machines ( with piston +mobile crosshead).
3. Control START / STOP:
Activates MD module control
4. Grips oppening and closing:
Upper/lower grips independent operation
5. Extensometer positioning
For automatic versions
6. Emergency stop:
According to CE mark requirements
7. LCD graphics display of 128 x 64
extensometer)
›› Upper/lower yield stress
›› Percentage reduction of area after fracture
›› Percentage elongation after fracture
Type of available control :
›› Load - Position
›› Load-Extension-Position (only with extensometer)
Control change between materials ranges
With the following criteria, end of elastic range, end of yield
range and breakage can be detected.
›› Defined values: Mpa, kN/mm2,kN, N
›› Relative drop in relation to Fm: %
›› Absolute drop: N, kN
Sample definition:
›› Thickness, widthness, diameter, intial section(So),
gauge length (lo), parallel length (lc)
Test configuration:
››Pre-load value and speed to reach preload
››Maximum stress speed within elastic range.
››Maximum extension speed within yield range.
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WinTest32 Software
WinTest32 Software
For materials testing.
Introduction
WinTest32 SOFTWARE
32-bit software pack, running under Windows™, specially developed by IBERTEST to be used in universal
testing machines.
Thanks to its flexibility and power, you can easily customize software WinTest32, to every need.
Indeed, the system allows user to configure tests according to the major international standards for engineering materials (UNE, ASTM, ISO, ... etc). However, for a
small supplement, IBERTEST can adapt WinTest32 software to special needs or for your laboratory.
During design phase of WinTest32 software, IBERTEST
paid special attention to the ease of use, so the program can be handled even by users with little experience in computers.
The WinTest32 control screen provides toolbar and intuitive menu for quickly identify available actions, to
select and configure test parameters without consulting the manual.
The software shows the user available options and its
possible settings at each time, guiding user step by
step interactively through test configuration.
Thus, WinTest32 helps user to optimize processes when
using materials testing machine, getting the best performance both in the execution of the test and in the
results analysis.
Initial control screen
Screen of test results
Management Software on a PC WinTest32 “All in One” touchscreen
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WinTest32 Software
WinTest32 software provides complete control before, during and after the execution of the test.
1. PRE-TEST CONFIGURATION
WinTest32 SOFTWARE
To configure tests at your convenience, the software
offers many options, such as:
›› Setting-up of the machine: Establishment of safety
limits, speed of movements, preload, automatic
return, etc.
›› Users management, with custom options for each
operatuser. Provides system security and prevents
unauthorized use.
›› Type of test to perform: Tensile, compression, bending, cycles, etc. The settings change automatically
according to the chosen type of test.
Testing machine setting-up
›› Working method: preconfigured by IBERTEST
(according to a Standard Test) or free configuration
according to the criteria of the user (always within the
physical and mechanical limitations of the machine,
testing devices and sensors. )
›› Individual or serial testing. Serial tests are well
suited for example, repetitive tests with machines
intended for Production Quality Control.
›› Select the type of automatic control in stroke, load
or strain (with appropriate optional transducers)
›› Activation of additional sensors placed on the
machine or in the specimen, such as strain gauges,
temperature sensors, etc. 1
›› Select the type of diagram (load-time, load-stroke,
load-strain, etc.). For the graphical representation of
the test.
Configuration of Tests
›› Results to display on screen (in real time) or in the
report (after the validation of the test).
›› Automatic execution of calculations derived from
the test results (strength, elastic modules, etc.) by
means of a software integrated programmable
calculator.
›› Design of test reports, fully customizable. Test
reporting is essential for laboratories subjected
to Good Laboratory Practices (GLP), or Quality
Assurance Systems, as per ISO-EN 17025.
And many more options.
(1): For sensors previously installed into the system.
Auxiliary window “traction parameters”
Available when selecting a tensile test.
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WinTest32 Software
2. SPECIMENS IDENTIFICATION
By means of window: “Specimen Parameters”, user has
multiple options to label specimens.
›› Name of test / specimen / sample, origin, batch,
client, auto-numbering, date, etc.
›› Free text. For adding any important info not reflected above.
Some parameters are involved in automatic calculations of test results, while others only will appear in the
report (and / or screen of results) as useful background
information to aid you in your analysis.
Setting parameters for the test piece
3. TEST DEVELOPMENT
WinTest32 SOFTWARE
›› Test material, geometry of the specimen (length,
width, diameter), mass, density, etc..
The program performs tests automatically, according
to the method and parameters previously introduced
in the test configuration.
For test monitoring , PC screen shows shows, in real
time, following features:
›› Graphical representation: XY charts of load-stroke,
load-strain, stroke-strain, etc.
›› Instant numerical values, ​​obtained by the sensors
connected to the system (position, load, strain, etc).
Location of significant points on the graph of the test
›› Real-time execution and presentation, of the
results of the calculations pre-programmed by the
user with the integrated programmable calculator.
If something goes wrong, the user can stop the test at
any time during its execution.
4. TEST RESULTS: ANALYSIS AND MANAGEMENT.
Once test is completed, results and the graphical representation are shown in the screen. If user rejects the
test, results won´t be stored. Before validating the test,
you can perform following actions:
Test comparison - 3D representation
›› Select and expand areas of the graph (zoom).
›› Change the type of XY chart.
›› Location and search for singular points of the chart.
The statistical program allows you to compare several
tests including consecutive superimpose curves, create 2D and 3D bar and lines diagrams, create bmp images, etc.
The output files can be converted to ASCII or CSV formats to be exported to other systems such as Excel,
LIMS, etc.
Example of a test report
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WinTest32 Software
Main Features
Operating system.
WinTest32 works with all Microsoft™ Windows® (32 and 64 bits) operating systems (XP, Vista,
Windows 7), and shares common features with other Windows® programs (system of menus, toolbars, file management, sizing of windows, colors, etc..)
Help functions (usa- The icon toolbar can be displayed as reduced version, including only the more common
bility).
features and larger icons.
WinTest32 SOFTWARE
The program is compatible with touch screen computers.
The F1 key activates the help window. Help support includes a complete user manual for
each application.
Type of tests
Tensile, compression, flexure (one or two load points), bending, extrusion, penetration,
shear, etc., on metallic and nonmetallic materials.
Test models
WinTest32 comprises test models according to most commonly used standards (EN, ASTM,
ISO, etc..). The user can configurate similar test models.
Under request, we can make modifications to configure your WinTest32 software to your
special needs (consult additional cost)
Cyclical testing
WinTest32 allows to create cyclic tests, with rising, keeping or falling of the load applied to
the specimen. The change of slope or ramp can be done in response to load, stroke or both
figures inclusive.
When necessary, the slope changes may be accompanied by the control mode (load or
stroke) changes.
Serial testing
Possibility of grouping several tests together, in series and subseries.
It is possible to obtain statistical information of the grouped tests parameters.
Multi-frame control
Management of up to six testing zones, in alternately way, using the same PC and the same
software. The software shows the available test zones to selecting.
Measurement chan- Simultaneous representation of several measurement channels at once.
nels
WinTest can manage up to 16 channels (both deformation or auxiliars). The channels can
be configured by the user. To use all features offered by WinTest32, you may need addtional
hardware.
Calculator program- The system integrates a programmable formula calculator.
ming
In this way, you can combine parameters of the specimen with results or values ​​obtained
during the test, in order to obtain derivatives results (modules, strength, unit conversion,
etc.) in real time.
File management
Test results automatically recorded on hard disk, and the configuration of the machine at
the time of their execution. These tests can be recovered for further analysis.
Data exportation
The output files can be exported in Excel format (csv or xls), allowing these files to be imported for most of the programs, word processors and spreadsheets on the market.
Statistics
Incorporates the possibility of performing statistical analysis on tests previously recorded
on hard disk.
The statistics can be displayed as graphs, histograms, level with Gaussian distribution,
charts, dimensional comparison (both tapes and volumes), test curves comparison by superimposing them on a diagram of coordinates, etc.
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Telediagnosis
TELEDIAGNOSIS (Optional Service)
WinTest32 SOFTWARE
TELEDIAGNOSIS is a remote diagnostic service and
maintenance support, available for all IBERTEST testing machines equipped with the “W” system for control, programming and data-acquisition by means of
computer.
To run TELEDIAGNOSIS a link program is used which establishes a remote connection to the control computer
of the machine
When connected, our technicians are able to take control of the testing machine, as if they were in front of it,
to act on the problem quickly and effectively, without
displacements to your laboratory.
So, intervention from our Technical Service is possible
regardless of the location of the machine, as long as an
access to a fast Internet (ADSL or similar) is available..
IBERTEST Spain - Madrid Technical Services
Even on those occasions when the Technical Service must act “in situ”, the TELEDIAGNOSIS is helpful to
clearly identify the problem and choose the best solution to fix it.
In short, the immediate attention of TELEDIAGNOSIS
service minimizes downtimes and avoids delays in the
work of laboratory, while reducing or eliminating the
overhead of moving the IBERTEST technicians.
During a TELEDIAGNOSIS session, the following actions can be performed:
›› Software correction and review: IBERTEST
technicians can inspect the file system software
WINTEST32 test, wrong configurations, lost files
and directories, corrupted files by viruses, etc.
Once detected errors, only the appropriate libraries
and changes are transferred, without reinstalling
complete programs..
Real time TELEDIAGNOSIS link
›› Remote handling: IBERTEST technicians can
handle the remote machine in real time to perform
maneuvers, tests of mechanical movement,
installation of testing transducers and accessories,
verification of electrical and electronic systems, on/
off alarm and security systems, etc.
›› Videoconference: Via web-cam a videoconference
between client and our technicians can be mantained,
thus we can get invaluable visual-information about
the correct operation of the machine’s mechanical
and hydraulic systems. Also, by written or voice
messages, it is possible to exchange views and
comments, and give appropriate instructions to
the user, when necessary, to perform some physical
action in the machine.
›› Updates. The WINTEST32 software can be easily
updated to its latest version (as long as the computer
are able to support it). This allows enjoying the
advantages resulting from the continuing work of
review and program development.
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Laboratory of the end-user (anywhere in the world)